Exam 11: An Evolving Enemy: Natural Selection

You notice in the fall that the oak trees on campus change color at slightly different times, even though the environment is the same for all the trees. What is the most likely explanation?

Which adaptation is constrained by the particular ancestral structure of the organism, resulting in a jury-rigged design?

-What type of selection is shown in this figure?

-How would you describe the gene changes shown in this figure?

After four observations, Darwin made the inference that natural selection causes what process?

What is evolution?

Which example is an evolutionary adaptation?

A population of caterpillars feeds on the leaves of trees in a forest and is in turn food for birds that eat them off the tree leaves. Given this information, which adaptation would be most likely to evolve?

True or false: It was better for humans to walk upright, so they evolved a different pelvis than their primate ancestors.

Why is combination drug therapy less likely to lead to resistance than single drug therapy?

In 2005, a strain of extremely drug-resistant bacteria was isolated from a man in New York City. Public health officials braced themselves for many more cases, but they never appeared. What is the most likely explanation?

How is tuberculosis transmitted?

Artificial selection occurs when an organism's fitness is controlled by ________.

What is the raw material for evolution?

Drug resistance to anti-HIV drugs is a serious problem. Why does drug resistance appear so rapidly in HIV?

A population of birch trees is present on the side of a mountain and is preyed upon by beetles that burrow into bark. Which tree would be the most fit?

What type of selection would include the evolution of a long neck in giraffes?

Which of the following is not part of the theory of natural selection?

True or false: Any individual organism has the potential to evolve if it's given enough time and possesses a mechanism to generate variation.

In order for the theory of common descent and the theory of natural selection to both be supported, what can we infer about the genetic material for all life?